By Biggus,
"Where will your follow on SSBNs, if they are purchased, be based in 15 years from now?"
When Polaris was procured extensive studies identified only 3 suitable locations for an SSBN fleet - Faslane, Milford Haven and Falmouth. Given that there must be some fear that Wales will go the same way as Scotland, if the latter does eventually go independent then there is only one place - Falmouth.
Ergo, base the LRMPA at Culdrose.